8. Conclusion

This course has followed, in Dart, exactly the same progression as the [Introduction to the TypeScript language and the NestJS web framework through examples (2026)] course: the fundamentals of the language, functions, four client variations for the same server (a simple script, separate DAO/business layers, a compiled project, and a web application), and database access (MySQL), first via a native driver and then via a hand-written “ORM” driver due to the lack of a mature equivalent to TypeORM or Prisma.

The systematic differences encountered throughout the course highlight Dart’s unique profile compared to TypeScript: NOMINAL and SOUND typing, never contradicted by what actually happens at runtime (no implicit coercion, no MySQL decimal returned as a string despite its declared type); a strict distinction between the Dart world and the JavaScript world when targeting the web ([dart:js_interop], [.toJS]), offset by a AOT compilation that, conversely, does not require ANY polyfill; recent NEW features (records, patterns, sealed classes, class modifiers) that play a role in Dart 3 comparable to that of the latest versions of ECMAScript on the TypeScript side; and, finally, a more tightly-knit package ecosystem, where certain tools (ORM and MySQL foremost among them) do not yet have the mature equivalents offered by the npm ecosystem.